6. 下面的知识你了解多少？选择填空。
()① We should for them when we see the animal signs.
A. look out
B. look for
C. look after
()② — What should we do in the library? — We should .
A. keep quiet
B. eat and drink
C. talk loudly
()③ Jack and Jane hungry and tired when they finished their homework.
A. feel
B. felt
C. feels
()④ Kitty could not her way home.
A. found
B. finds
C. find
()⑤ We shouldn’t in the library.
A. smoke
B. smokes
C. smoking
()⑥ We eat or drink in class.
A. should
B. shouldn’t
C. must
()⑦ The man is father.
A. Jack’s and Jane’s
B. Jack and Jane’s
C. Jack and Jane
()⑧ Yesterday I helped a woman my way home.
A. at
B. in
C. on

① A
② A
③ B
④ C
⑤ A
⑥ B
⑦ B
⑧ C

① 题干意思是“当我们看到动物标志时，我们应该______它们”，look out for是“小心,注意”的意思，符合题意。
② 在图书馆应该保持安静，选择keep quiet。
③ 句子时态是一般过去时，动词用过去式，feel的过去式是felt。
④ could是情态动词，后面接动词原形。
⑤ shouldn’t是情态动词，后面接动词原形。
⑥ 句意为“我们不应该在课堂上吃东西或喝东西”，选择shouldn’t。
⑦ 表示两人共有某物时，只在最后一个名词后加’s，这里表示“Jack和Jane共同的父亲”。
⑧ “在某人回家的路上”用on one’s way home，是固定搭配。

7. 禁止的标识是什么样的，你了解吗？读一读，根据图片提示，完成下列句子。

① ② ③ ④ ⑤
① You shouldn’t in the hospital.
② You shouldn’t .
③ You can’t here. It’s dangerous.
④ Don’t when you are in the museum.
⑤ You must into the bin.

①smoke ②walk on the grass ③swim ④take photos ⑤put the rubbish

①图中是禁止吸烟标识，“吸烟”用smoke，shouldn’t后接动词原形，故填smoke。②图中是禁止践踏草坪标识，“践踏草坪”用walk on the grass，shouldn’t后接动词原形，故填walk on the grass。③图中是禁止游泳标识，“游泳”用swim，can’t后接动词原形，故填swim。④图中是禁止拍照标识，“拍照”用take photos，Don’t后接动词原形，故填take photos。⑤图中是将垃圾扔进垃圾桶标识，“把垃圾扔”用put the rubbish，must后接动词原形，故填put the rubbish。